https://www.youtube.com/watch?feature=player_detailpage&v=UGfvunmfB8k#t=172s
Same basic principle. A downward pulling movement with an element of resistance against vibration/shock. The ropes...
Type: Posts; User: wenshu
https://www.youtube.com/watch?feature=player_detailpage&v=UGfvunmfB8k#t=172s
Same basic principle. A downward pulling movement with an element of resistance against vibration/shock. The ropes...
http://www.youtube.com/watch?v=yqJlN29tBxY